Gas regulator



April 30, 1929- G. BORNEFELD 1,711,133

GAS REGULATOR Filed March 8, 1928 7 h Z A 0 fawn Z071 Patented Apr. 30,1929.

PATENT OFFICE GOTTFRIED BORNEFELD, OF WERMELSKIRCHEN, GERMANY.

GAS REGULATOR.

Application filed March 8, 1928, Serial No. 260,190, and in Germany June5, 1926.

The object of the present invention is to prevent the escape of gas fromgas conduits for lighting and heating, and the invention consists in theprovision of a double-acting safety valve arranged in the conduit andsubjected to spring pressure so as to remain closed it the conduitbehind the valve should not be full open or it it should leak.

Fig. 1 ot the accompanying drawings is an 1 elevation of the valvecasing, and

Fig. 2, a longitudinal section of the complete device.

The device comprises a casing which is divided into two detachable partsa and I) each adapted to be screwed on to a gas piping. Each part isformed with a valve seat and has a valve which opens in the direction ofthe gas flow. T he'valve e of the part a is controlled by a compressionspring h, and the valve 9 of 90 the part I) is controlled by a tensionspring 2 both springs being chosen so as to maintain the valve closed itthe conduit behind the valve casing should not be fully opened or if itshould develop a leak. Escape of gas with consequent detrimental resultwill thus be obviated.

The valve stems are tubular. The stem 7 of the valve 9 telescopes withinthe stem (Z oi the valve 0, and the latter stem is guided within asleeve is which is carried by a slotted disc c that is clamped betweenthe two parts of the valve casing. The spring h is arranged outside thestem (Z and bears against the end of the sleeve is. The spring '5 isarranged inside the stem 7 and engages a cross-bar Z which is fixed tothe sleeve is, the stem (Z being slotted to admit the cross-bar.

When the gas acts with full pressure on the two valves, the latter openin opposition to the spring and allow the gas to pass.

I claim:

A safety valve for gas conduits comprising a casing arranged in theconduit. two co-axial valves in said casing adapted to open in thedirection of the flow of the gas, said valves being provided with hollowstems, one stem being arranged to telescope within the other, and asleeve carried by the casing as a guide for both stems, one of thesprings being arranged outside the respective valve stem. the otherspring being arranged inside its valve stem.

GOTTFRIED BORNEFELD.

